WO2004007380A1 - Procede de production de materiaux isolants en fibres minerales - Google Patents

Procede de production de materiaux isolants en fibres minerales Download PDF

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Publication number
WO2004007380A1
WO2004007380A1 PCT/EP2003/005894 EP0305894W WO2004007380A1 WO 2004007380 A1 WO2004007380 A1 WO 2004007380A1 EP 0305894 W EP0305894 W EP 0305894W WO 2004007380 A1 WO2004007380 A1 WO 2004007380A1
Authority
WO
WIPO (PCT)
Prior art keywords
primary energy
fibers
petroleum coke
energy source
melt
Prior art date
Application number
PCT/EP2003/005894
Other languages
German (de)
English (en)
Inventor
Guido Nykiel
Miguel GONZÁLEZ CAPARRÓS
Original Assignee
Deutsche Rockwool Mineralwoll Gmbh & Co. Ohg
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=30010082&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2004007380(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Deutsche Rockwool Mineralwoll Gmbh & Co. Ohg filed Critical Deutsche Rockwool Mineralwoll Gmbh & Co. Ohg
Priority to SI200332324T priority Critical patent/SI1525165T1/sl
Priority to AU2003238473A priority patent/AU2003238473A1/en
Priority to EP03732538.8A priority patent/EP1525165B1/fr
Publication of WO2004007380A1 publication Critical patent/WO2004007380A1/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
    • C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
    • C03B5/235—Heating the glass
    • C03B5/2356—Submerged heating, e.g. by using heat pipes, hot gas or submerged combustion burners
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
    • C03B5/12—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in shaft furnaces
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
    • C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
    • C03B5/235—Heating the glass
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
    • C03C25/10—Coating
    • C03C25/42—Coatings containing inorganic materials
    • C03C25/44—Carbon, e.g. graphite

Definitions

  • the invention relates to a method for producing insulating materials from mineral fibers, in particular from glass and / or rock wool, in which a silicate melt is produced in a melting unit, in particular a cupola furnace, and is fiberized in a fiberizing device into preferably microfine fibers, the fibers preferably binders and / or impregnants are added and the fibers are deposited on a conveyor as a fleece.
  • Mineral fiber insulation materials are made from silicate melts.
  • a silicate starting material for example glasses, natural or artificial rock
  • a melting unit for example a cupola furnace or a shaft furnace.
  • the silicate melt obtained from this is then fed to a defibration unit in which the silicate melt is defibrated into microfine mineral fibers.
  • the mineral fibers then fed to a collecting chamber are generally wetted with binding and / or impregnating agents and placed on a conveyor device arranged below the collecting chamber, which is generally a conveyor belt.
  • the mineral fibers wetted with binding agents and / or impregnants form a mineral fiber fleece on the conveying means, which is processed in downstream thermal and / or mechanical devices in a manner known per se in order to produce insulating materials in the form of sheets, plates, moldings or the like.
  • mineral fiber insulation materials consist of glassy solidified fibers that are point-to-point bonded with small binders.
  • mineral fiber insulation materials glass wool is differentiated from stone wool.
  • Mineral fiber insulating materials made of glass wool are made from silicate melts with a relatively high proportion of network converters, especially alkalis and boron.
  • the raw materials are melted in oil or gas-fired furnace furnaces.
  • the fiberization takes place, for example, with the help of the so-called TEL process, in which the melt is subjected to centrifugal forces through openings in the walls of a rotating body. pers is, with this method relatively long and glul " fibers are produced.
  • Stone wool insulation materials were originally melted from rocks such as diabase, basalt and limestone, dolomite.
  • Waste from production is processed in these artificial rocks in particular, and the waste can also consist of solidified melts which are produced during the regular emptying of the melting unit.
  • faulty production batches are also processed.
  • the waste is crushed in a first step, then mixed with Portland cement as a binder and stone chippings and finally pressed into artificial stones, so-called shaped stones.
  • the coarse-grained rocks and / or the correspondingly shaped shaped stones are filled together with coarse coke as the primary energy source in the melting unit, usually in the cupola furnace.
  • Surcharges are also added which have a grain size spectrum of approximately 80 to 200 mm.
  • the iron accumulating in the area of the floor must be drained regularly. Fiber production is interrupted while the iron is being drained.
  • the melt contained in the melting unit at this time is not suitable for the direct production of insulation materials after the melting unit has been started up again and is therefore processed as waste in the course of recycling and fed into production.
  • Biosolubility ie the length of time that mineral fibers remain in the human organism, is important in the production and assessment of mineral fibers.
  • the bio-solubility of insulating materials made of stone wool is significantly influenced by the content of AI 2 O 3 .
  • AI 2 O 3 the content of Al 2 O 3 .
  • Al 2 O 3 the temperature resistance of the fibers increases on the one hand and, surprisingly, the bio-solubility also increases.
  • a typical composition of bio-soluble mineral fibers made of stone wool has a share of Si0 2 between 35 and 43% by mass, a share of Al 2 O 3 from 17.5 to 23.5% by weight, a share of Ti0 from 0.1 to 3 % By mass, a proportion of FeO from 1.7 to 9.3% by mass, a proportion of CaO + MgO from 23.5 to 32% by mass and a proportion of K 2 O + Na 2 0 of 1, 3 to 7 mass%.
  • Refurbished melting units For example, the residues are crushed for recycling and mixed in different grain sizes with one another or with other splintered raw materials, mixed with binders, such as cement, and pressed into sufficiently large moldings before these moldings are fed as coarse raw materials to a shaft furnace or a cupola furnace , From EP 0 765 295 C1 it is known, for example, to bind suitable moldings made from fine-grained raw materials with the aid of lignin. In WO 94/12007, corresponding molded articles with a molasses-containing binder are described.
  • coke is used as the primary energy source.
  • the primary energy required to melt the raw materials is up to 2 megawatts per ton of melt.
  • the content of inorganic constituents of the coke (Asc ⁇ eyc- ; - hali) is between 6 and 10% by mass.
  • the non-combustible components of the coke are integrated into the silicate melt.
  • the invention is based on the object of further developing a method according to the invention in such a way that a cheaper method can be carried out by using inexpensive primary energy sources, but at the same time yielding good melting results without contaminating the melt.
  • Residues of almost pure carbon that arise during the thermal cracking of petroleum are used, for example, as firing material in the manufacture of special steels.
  • this is petroleum coke, which is produced in the so-called delayed cooking process, an endothermic process.
  • Residues from crude oil distillation, for example of heavy fuel oil are quickly heated in an oven in this process and then introduced into a reaction zone at certain temperature and pressure conditions.
  • the cracked and partially evaporated residue on leaving the furnace is converted into volatile hydrocarbons and petroleum coke in the reaction zone.
  • This petroleum coke is usually produced in pieces with grain sizes between 1 and 300 mm.
  • the invention ? ß Uwi the ⁇ ⁇ r £ i.eilc [r ⁇ g " petroleum coke to be used for insulating materials made from mineral fibers is a very hard, raw carbon product with the following characteristic properties:
  • the petroleum coke partially replaces the usual primary energy source foundry coke in the manufacture of insulating materials from mineral fibers.
  • a piece of petroleum coke with particle sizes between 50 and 300 mm has proven to be particularly advantageous.
  • a batch serving as primary energy source can consist of up to 75% petroleum coke, with the remaining 25% still being used as foundry coke.
  • the petroleum coke is preferably further calcined in the cupola furnace, ie the petroleum coke loses its residual water and enriches the blast furnace gas with hydrocarbons. These hydrocarbons lead to an increase in the latent heat in the exhaust gas and are oxidized to C0 2 in subsequent post-combustion plants together with the carbon monoxide generated. This reduces the energy requirements of the afterburning plants.
  • the petroleum coke passes through temperature zones that lead to calcination of the petroleum coke.
  • the calcination takes place in an endothermic process, namely, a P'.roly ⁇ epT process, in which a portion of hydrocarbons is reduced in a uni ⁇ u ⁇ Gshiucc of Sa eisto f or ⁇ a reducing atmosphere at temperatures from 1250 to 1500 ° C.
  • the process steps of heating, drying, stripping and sintering take place during the pyrolysis process.
  • the coke is partially desulfurized. However, only the thermally unstable sulfur, which makes up approx. 50% of the total sulfur content of petroleum coke, can be removed.
  • Enrichment of the top gases with sulfur-containing compounds can be reduced if necessary by adding additives to the top gas, for example Ca (OH) 2 .
  • additives for example Ca (OH) 2 .
  • the essence of the invention is the substitution of the conventional primary energy source with chunky petroleum coke, wherein up to 75% of the conventional primary energy source, for example foundry coke, can be replaced with petroleum coke.
  • the petroleum coke is exposed to various temperature zones in the cupola furnace, through which a natural calcination process of the petroleum coke is carried out with high density, the petroleum coke not only having the property of an energy source but also a supporting function in the cupola furnace sump.
  • a cupola furnace is fed a coarse feed, half of which consists of a primary energy source and rocks as the raw material for a silicate melt.
  • the rocks contain 85% artificial stones and 15% natural stones such as diabase and basalt.
  • the artificial stones consist of 60% recycled material and 40% dismantled mini- Tre ⁇ ifaGcr-Dämm ⁇ ioffen. wherein the Rec is cüngmsierial, taken from the production process in the form of sections 304._qualitativ-inferior products.
  • the artificial stones are pressed from fine-grained material and the solids required for the artificial stones together with rocks used as a supporting grain with latent hydraulic substances to form coarse bodies.
  • the primary energy source consists of 70% petroleum coke and 30% foundry coke.
  • the petroleum coke has a calorific value of 35,000 kJ / kg, a water content of 8%, an ash content of 0.75%, a sulfur content of 2% and 11% volatile components.
  • the required combustion air is supplied to the column of raw material and primary energy carrier arranged in the cupola furnace in the counterflow principle, so that the primary energy carrier burns off above the shaft floor.
  • the temperature in the cupola furnace reaches values that are sufficient for the melting of the raw material.
  • the melt discharged from the cupola furnace and fed to a defibration unit consists of a Si0 2 portion of 38% by mass, an Al 0 3 portion of 22% by mass, a Ti0 2 portion of 2.6% by mass and a portion of FeO of 3.4 mass%, a proportion of CaO + MgO of 31.5 mass% and a proportion of K 2 O + Na 2 0 of 2.5 mass%.
  • Mineral fibers for insulation materials made from this melt are classified as bio-soluble.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Combustion & Propulsion (AREA)
  • Processing Of Solid Wastes (AREA)
  • Glass Compositions (AREA)

Abstract

L'invention concerne un procédé de production de matériaux isolants en fibres minérales, en particulier en laine de verre et/ou en laine minérale, consistant à produire une masse fondue siliceuse dans une unité de fusion, en particulier un cubilot, à réduire cette masse fondue en fibres, de préférence en microfibres, dans un dispositif de désintégration, à ajouter aux fibres de préférence des liants et/ou des agents d'imprégnation, puis à déposer les fibres en nappe sur un dispositif de transport. L'objectif de l'invention est de perfectionner ce procédé de façon à augmenter sa rentabilité au moyen de sources d'énergie primaire économiques tout en permettant d'obtenir de bons résultats de fusion sans contamination de la masse fondue. A cet effet, la source d'énergie primaire utilisée est un résidu obtenu lors du craquage thermique de pétroles, ce résidu étant constitué de carbone pratiquement pur, par exemple du coke de pétrole.
PCT/EP2003/005894 2002-07-16 2003-06-05 Procede de production de materiaux isolants en fibres minerales WO2004007380A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SI200332324T SI1525165T1 (sl) 2002-07-16 2003-06-05 Postopek za proizvodnjo izolacijskih materialov na osnovi mineralnih vlaken
AU2003238473A AU2003238473A1 (en) 2002-07-16 2003-06-05 Method for producing insulating materials on the basis of mineral fibers
EP03732538.8A EP1525165B1 (fr) 2002-07-16 2003-06-05 Procede de production de materiaux isolants en fibres minerales

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10232285A DE10232285B4 (de) 2002-07-16 2002-07-16 Verfahren zur Herstellung von Dämmstoffen aus Mineralfasern
DE10232285.6 2002-07-16

Publications (1)

Publication Number Publication Date
WO2004007380A1 true WO2004007380A1 (fr) 2004-01-22

Family

ID=30010082

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2003/005894 WO2004007380A1 (fr) 2002-07-16 2003-06-05 Procede de production de materiaux isolants en fibres minerales

Country Status (5)

Country Link
EP (1) EP1525165B1 (fr)
AU (1) AU2003238473A1 (fr)
DE (1) DE10232285B4 (fr)
SI (1) SI1525165T1 (fr)
WO (1) WO2004007380A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2395231A (en) * 1941-09-19 1946-02-19 United States Gypsum Co Cupola furnace
US4822388A (en) * 1987-02-27 1989-04-18 Gee Kenneth H Method of operating mineral wool cupolas and using spent electrolytic aluminum pot lining

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9412007D0 (en) * 1994-06-15 1994-08-03 Rockwell International A S Production of mineral fibres
KR19980702344A (ko) * 1995-02-20 1998-07-15 로버트 밴 바우닝 광물면 제품의 제조방법

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2395231A (en) * 1941-09-19 1946-02-19 United States Gypsum Co Cupola furnace
US4822388A (en) * 1987-02-27 1989-04-18 Gee Kenneth H Method of operating mineral wool cupolas and using spent electrolytic aluminum pot lining

Also Published As

Publication number Publication date
EP1525165B1 (fr) 2013-10-02
EP1525165A1 (fr) 2005-04-27
DE10232285A1 (de) 2004-02-05
SI1525165T1 (sl) 2014-04-30
AU2003238473A1 (en) 2004-02-02
DE10232285B4 (de) 2006-10-12

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